package com.atguigu.srb.base.config;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.jsontype.impl.LaissezFaireSubTypeValidator;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
public class RedisConfig {

        @Bean
        public RedisTemplate<String, Object> redisTemplate(LettuceConnectionFactory redisConnectionFactory) {

            RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
            redisTemplate.setConnectionFactory(redisConnectionFactory);

            //首先解决key的序列化方式
            StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
            redisTemplate.setKeySerializer(stringRedisSerializer);

            //解决value的序列化方式
            Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class);

            //jackson的json对象映射
            ObjectMapper objectMapper = new ObjectMapper();
            //序列化时将类的数据类型存入json，以便反序列化的时候转换成正确的类型
            objectMapper.activateDefaultTyping(LaissezFaireSubTypeValidator.instance, ObjectMapper.DefaultTyping.NON_FINAL);

            // 解决jackson2无法反序列化LocalDateTime的问题
            objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
            objectMapper.registerModule(new JavaTimeModule());

            //设置jackson的映射配置
            jackson2JsonRedisSerializer.setObjectMapper(objectMapper);

            //设置redis的value序列化方案为jackson
            redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
            return redisTemplate;
        }

}
